Patent US3400214A successfully refreshed from Google Patents.
US3400214A
Expired / Lapsed
US
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Data handling system with screen made of fiber optic light pipes containing photochromic material
Assignee: Stromberg Carlson Corp
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Filing: 1964-08-26
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Granted: 1968-09-03
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Expires: 1984-08-26
Abstract
No abstract record available.
Inventors
- 👤 Omer F Hamann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:31
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/12; G; G11; G11C; G11C13/00; G11C13/04; G11C13/041; H01J29/14; H01J29/18; H01J29/24; H01J31/00; H01J31/08; H01J31/26; H01J31/265; H01J31/58; H01J31/60; H01J31/62; H01J31/64; Y; Y10; Y10S; Y10S65/00; Y10S65/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3124715A
Cited
US2969474A
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US2979632A
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US3085469A
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US3134297A
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US3218390A
Cited
US3225138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |